Depending on what sort of service you're running that might actually be justifiable, but I wasn't assuming a threshold breach for 404s would be waking people u

Depending on what sort of service you're running that might actually be justifiable, but I wasn't assuming a threshold breach for 404s would be waking people up in the middle of the night. At any rate, any such alert is always somewhat vulnerable to that problem, regardless of how the error codes are being triggered. Sounds more hypothetical than likely-in- practice.